Re: [Qemu-devel] [patch 18/18] qemu: PCI device, disk and host network hot-add / hot-remove

[Daniel P. Berrange]

On Wed, Feb 04, 2009 at 11:33:21AM -0200, Marcelo Tosatti wrote:
> Add monitor command to hot-add PCI devices (nic and storage).
>     
> Syntax is:
>     
> pci_add pcibus nic|storage params
>     
> It returns the bus slot and function for the newly added device on success.
>     
> It is possible to attach a disk to a device after PCI initialization via
> the drive_add command. If so, a manual scan of the SCSI bus on the guest
> is necessary.
>     
> Save QEMUMachine necessary for drive_init.
>     
> Add monitor command to hot-remove devices, remove device data on _EJ0 
> notification.

Does this allow for hot-add of host TAP devices passing a open
file descriptor across with SCM_RIGHTS (man 7 unix) on the UNIX
domain socket connection to the monitor ?   This ability is
critical for libvirt, because we need to be able to allocate the
TAP devices ourselves & do various configuration tasks before giving
them to QEMU - the external script capability isn't suitable /flexible
enough for this.

Regards,
Daniel
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